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Thomas - Model 1900 Series -Liquid Flow Switch
Standard flow calibration is in water @ 70°F with lead wires up. Calibrated on increasing flow. Temperature effect on flow settings: water calibration, slight change; oil varies with viscosity. Set point accuracy will change slightly in other than calibrated position.
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- Optional aluminum housings with SST trim are stocked. Consult factory.
- Optional mounting holes available. Consult factory.
- Also available: leads in different lengths, cable, terminated ends, etc. Consult factory.
- Relays for higher loads are available. See accessories section for details
- High-temperature units available to 400°F. Consult factory.
- Standard flow settings are calibrated in water. Other set points in water or oil are available. Consult factory.
- Other wetted materials: Hysol Epoxy
- All SST piston for either brass or SST housing, eliminating hysol epoxy. Consult factory.
- Calibration: Flow stands are calibrated to the National Bureau of Standards and Thomas Products Ltd. recalibration schedule.
- Weight: 1 lbs
- Dimensions: 8 × 5 × 3 in
- Housing Material: Brass, SST
- Reed Switch Logic: SPDT, Black-Common, Red-NC, Orange-NO, SPST, Red-Common, Red-NC (non-polar switch), SPST, Red-Common, Red-NO (non-polar switch)
- Flow Set Point: 0.1 GPM Increasing Flow, 0.25 GPM Increasing Flow, 0.5 GPM Increasing Flow, 0.75 GPM Increasing Flow, 1.0 GPM Increasing Flow, 1.5 GPM Increasing Flow